Eduction-valve for air-compressors.



No. 894,905. `PATENTE) AUG; 4, 1,908.

1 J. ROQERS. 'BDUGTION VALVE POR AIR COMPRESSORS. APPLIOATION FILEDSEPT.26, l907.

ore

A A fr I HI A 5. mm F construction of eductlon valves of t UNITED STATESPATENT OEETOE.

,JOHN ROGERS, OERRIDGEPORT, CONNECTICUT. f

i EDUCTION-VALVE FOR AIRsCOMPRESSORS.

Specication of Letters Patent.

Patented Aug. 4, 190s.

Application mea september zsfisoz: semi No. 394,666.

compressors that are operated by wa er,

alternatelyadmitted to a cylinder through an inductlon valve andexhausted therefromthrough an eduction'valve which is operated byhydraullc pressure preferably controlled `by the4 induction valve, asfor example in the automatic air compressor illustrated and described 1nLetters Patent No. 835,291,

anted to me November 6, 1906. The4 nction of the eduction valve', is tocontrol the exit of water from the cylinder and the valve is operated byhydraulic pressure alternately admitted to and exhausted from a pipe,the special objects of the present'in vention being to simplify andcheapenthe e type lllustrated in my said former patent and. to

. im rove their Operation in use.y

ith these and other objects in viewI have devised the simple and noveleduction valve, of which the following description in connection withthe accompanying ydrawing is a specification, reference characters beingused to indicate the several parts:

Figure 1 is a vertical section'illustrating my novel valve in theclosing position; Fig. 2 a similar view showing the valve in the o enpositlon; F1g. 3 a vertical section on t e line 3 3 1n Fig.v 2, lookingin the direction ofthe arrow; Figs. 4 and 5 are sectional viewslllustrating variant forms ofthe plunger` detached; and Fig. 6 is aninverted plan view' corresponding with Fig. 4.

10 denotes-the body or case of my novel valve, which may be of anyordinary or referred constructlon and may if referr'e be cast integralwith the base of t eair compressor or other device in which the valve is`used. .The body is provided with a longitudinal openin through it whichis indicated by 12 and w ch 1s lntersected by a central o ening,indicated by 13, at a right angle t reto.

14 denotes a plunger or valve proper which is adapted to reciprocate inthe central Opening and is provlded with a central bore 15 which closelyreceives a pipe 16 exdinal opening. l Y

The specia construction of the plunger is ample, the bore may be a holedrilled or cast therein and nished and it may or may not be lined with apiece ofL tubing. In'Fig. 3 I

the bore is lined with a tube 19. In Fig. 4 I

have illustrated a form of plun er having its interior cored out as atv17 for lghtness, and having a hole 18 at its upper end mto whlch Fi 5Ihave illustrated a plunger having an un ined bore. -The outer end ofthe plungeris provided with stem 20 which passes througha guide arnL21extending from the body and preferably with a hub 22 adapted to engagethe guide arm to limit the upward movement of the plunger and preventthe possibility of its being thrown out from the 23 vdenotes a springsurrounding the stem and bearing against the guide arm and the plunger,which may or may not be used. to msure the return of the plunger to theclosing position when water -is withdrawn from not of the essence of theinvention. For ex tending from the body across the longitu- I haveillustrated a form. Ofplunger in which l a tube 19 is forced with adrive it, and in Pips 16, as will be more fully explained.

ractice I find that the valve works perectly without any s rin its ownwelght insuring its return to t e c osing position the instant thepressure is relieved.

In o eratlon, the water passes alternately throu h opening 12 andthrough pipe 16. The ow of water maybe controlled by an automaticinduction valve, which however and is not shown.

supposing my novel valve to be'used 1n connection with an aircompressori When I the plunger is in the :position shown 1n F1 s.

forms no portion of the present invention emptied, \the water isWithdrawn from bore 15 and pipe 16, which allows the plunger to 1. Wateris now permitted to enter the height. When the water has reached the reuired height, the flow of water into the cytn drop and close openingl12, as shown in Fig.'

der is cut Oif and water is again caused' o opening and a second openingat right I 3o .closing position.

to ow through .pipe 16. This raises the plunger again to t e positionshown in Figs. 2 and 3 and allows the cylinder to empty again, .these oerations. being continuously repeated and t eplunger belng alternatelyralsed by the A assa e of water through pipe 16 to permit t e cy der tobe emptied and dropping when the water is withdrawn from p'pe 16 toclose the valve and revent the passage of water from the cylin er. I

lHaving thus described my invention I claim: l 1. A valve of thecharacter .described comprising a body having a longitudinal o ening topermit the passage of water t erethrough anda secon opening at rightangles thereto, a plungerl in said second opening adapted to be movedout of yalinement -withD the longitudinal opening, said plunger` havinga central bore and a pipe extending across the longitudinal opening andengaging the bore, whereby when water passes through said pipe theplunger is raised'to .the open ositlon, and when the pressure isrelieved t e plunger drops to the 2. A valve" comprisingga body having alongitudinal angles thereto, a plunger 1n said second opening providedwith a central bore and a f the character ydesciribed.

pipe extending across the longitudinal openlng and e aging the bore,substantially as described, or the purpose specified.

33A valve of the character described comprising a body having alongitudinal o ening, a second opening at right angles lt ereto, aplunger in said second opening arm extending lfrom the body throughwhich the stem asses, a pipe extending across the longitu 'nal openingand engaging the bore and a spring engaging the guide arm and theplunger to insure return of the plunger to the closing position whenpressure in the pipe is relieved.

In testimony whereof I aix my signature,

, in presence of two witnesses.

JOHN ROGERS. Witnesses:

A. M. WoosTER, S. W. ATHERTON.

